/*  
*   This file is a part of Neutrino - a lightweight UI library accelerated with OpenGL
*   Copyright (C) 2023 bsolos
*
*   This program is free software: you can redistribute it and/or modify
*   it under the terms of the GNU General Public License as published by
*   the Free Software Foundation, either version 3 of the License, or
*   (at your option) any later version.
*
*   This program is distributed in the hope that it will be useful,
*   but WITHOUT ANY WARRANTY; without even the implied warranty of
*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*   GNU General Public License for more details.
*
*   You should have received a copy of the GNU General Public License
*   along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

#version 130

out vec4 pColor;

uniform ivec2 uScreen;
uniform ivec2 uOffset;

void main() {
    pColor = gl_Color;

    float realX = (((gl_Vertex.x+uOffset.x) / uScreen.x) * 2.0) - 1.0;
    float realY = 1.0 - (((gl_Vertex.y+uOffset.y) / uScreen.y) * 2.0);

    gl_Position = vec4(realX, realY, 0.0, 1.0);
} 